To Add a Tool to the Quick Access Toolbar

Do one of the following:

Select File > Settings > User > Customize Ribbon .

or
Right-click in the blank space in the ribbon and select Customize Ribbon from the pop-up menu.

The Customize Ribbon dialog opens.
In the Customize Ribbon dialog's Quick Access Toolbar section, select Buttons from the Choose components from drop-down list.
All buttons are listed below Choose components from.

Note: If a button is not listed, then it means that the button is not created. In such case, you can select the Toolboxes (Application) option in the Choose components from drop-down list and search for an existing tool that can be converted to a button. Otherwise, you will have to create a custom tool in the Customize dialog with the desired key-in and other settings. This custom tool would then appear when you select Toolbox (Custom) in the Choose components from drop-down list.
Do one of the following:

From the list below Choose components from, select the desired tool and then Click Add.

or
From the list below Choose components from, select and drag the tool to the list below Customize the Quick Access Toolbar.
Click Apply.